The method of image line feature extract with high precision was studied based on the significance of line feature extraction in image measurement.

Dsp-based Digital Image Measure System;

In image measure,it's a key for image edge extraction.

It offers the strong means the capture and processing of Image measure system.

Research on image measuring software system of fermenting degrees;

In recent years,image measuring is a new developing technique.

This paper introduced design and practice experience of image measuring experiment in automation department of University of Science and Technology of China.

Computed Tomography Image Measurement and Analysis for Dynamic Configuration of Polymer;

Research on on-line-measuring clearance of assembly parts based on image measurement technology;

Contrast of sub-pixel location methods in image measurement;

A new method is presented according to the principle of measurement image target recognition of theodolites in order to solve these problems.

Aiming at the image measuring requirements of electro-optical theodolite,according to a theory of aim positioning precision decided by aim edge imaging effect of measurement image,a new evaluation method of measurement image is presented.

Based on the analysis of the basic characteristics of serial measurement images target,a new method is proposed,using the information before measurement target figure experiment to detect the target image.

Experimental research and analysis of automatic focusing function for imaging measurement;

On the basis of image technologies, a new kind of image auto-focusing and aiming system is proposed, which makes it possible that auto-focusing and workpieces auto-aiming is effected in imaging measurement system.

So,the new edge detecting algorithm for the imaging measurement use the direction mask based on classical Sobel mask in converting gray into grads image,and apply the polynomial interpolation to subpixel edge detecting at grads direction of edge on grads ima.